Link utili

http://www.kryptos-cia.com/

http://www.boncherry.com/blog/tag/k4/

http://www.guardian.co.uk/world/2005/jun/11/danbrown.books

http://www.wired.com/science/discoveries/magazine/17-05/ff_kryptos?currentPage=all

http://kryptosfan.wordpress.com/

http://kryptosfan.wordpress.com/k4/

http://realmoftwelve.kryptos.info/intimation/letter.html

http://realmoftwelve.kryptos.info/images/replica-tableau.gif

http://realmoftwelve.kryptos.info/speculation/k1solution.html

http://realmoftwelve.kryptos.info/images/replica-ciphertext.gif

http://kryptos.yak.net/50

http://www.und.nodak.edu/org/crypto/crypto/general.crypt.info/Kryptos/Kryptos.txt